13-23889257-C-T

Position:

chr13-23889257-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_005932.4(MIPEP):c.64G>A(p.Ala22Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000951 in 1,388,028 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00019 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000083 ( 0 hom. )

Consequence

MIPEP
NM_005932.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0660

Variant links:

Genes affected

MIPEP (HGNC:7104): (mitochondrial intermediate peptidase) The product of this gene performs the final step in processing a specific class of nuclear-encoded proteins targeted to the mitochondrial matrix or inner membrane. This protein is primarily involved in the maturation of oxidative phosphorylation (OXPHOS)-related proteins. This gene may contribute to the functional effects of frataxin deficiency and the clinical manifestations of Friedreich ataxia. [provided by RefSeq, Jul 2008]

MIPEP links:

PCOTH (HGNC:39839): (prostate and testis expressed opposite C1QTNF9B and MIPEP) Predicted to be located in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

PCOTH links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.039162904).

BS1

Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000191 (29/152216) while in subpopulation AMR AF= 0.000654 (10/15292). AF 95% confidence interval is 0.000354. There are 0 homozygotes in gnomad4. There are 15 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MIPEP	NM_005932.4 link	c.64G>A	p.Ala22Thr	missense_variant	1/19	ENST00000382172.4	NP_005923.3	Q99797

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
MIPEP	ENST00000382172.4 link	c.64G>A	p.Ala22Thr	missense_variant	1/19	1	NM_005932.4	ENSP00000371607.3	Q99797
PCOTH	ENST00000382133.9 link	n.170+246C>T		intron_variant		1
MIPEP	ENST00000469167.1 link	n.142G>A		non_coding_transcript_exon_variant	1/3	5

Frequencies

GnomAD3 genomes

AF:

0.000191

AC:

AN:

152216

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000235

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000171

AC:

AN:

17544

Hom.:

AF XY:

0.000222

AC XY:

AN XY:

9028

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000469

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000111

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00294

GnomAD4 exome

AF:

0.0000833

AC:

103

AN:

1235812

Hom.:

Cov.:

AF XY:

0.0000784

AC XY:

AN XY:

599456

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000414

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000536

Gnomad4 FIN exome

AF:

0.0000711

Gnomad4 NFE exome

AF:

0.0000858

Gnomad4 OTH exome

AF:

0.000120

GnomAD4 genome

AF:

0.000191

AC:

AN:

152216

Hom.:

Cov.:

AF XY:

0.000202

AC XY:

AN XY:

74366

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000235

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.000219

ExAC

AF:

0.0000622

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 17, 2021

The c.64G>A (p.A22T) alteration is located in exon 1 (coding exon 1) of the MIPEP gene. This alteration results from a G to A substitution at nucleotide position 64, causing the alanine (A) at amino acid position 22 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.61

BayesDel_noAF

Benign

-0.78

CADD

Benign

DANN

Benign

0.96

DEOGEN2

Benign

0.027

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.082

LIST_S2

Benign

0.48

M_CAP

Benign

0.0089

MetaRNN

Benign

0.039

MetaSVM

Benign

-0.95

MutationAssessor

Benign

1.1

PrimateAI

Uncertain

0.73

PROVEAN

Benign

0.10

REVEL

Benign

0.0050

Sift

Benign

0.38

Sift4G

Benign

0.69

Polyphen

0.0

Vest4

0.17

MutPred

0.24

Gain of relative solvent accessibility (P = 0.0023);

MVP

0.040

MPC

0.087

ClinPred

0.016

GERP RS

-1.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.036

gMVP

0.35

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over